Cotton gin



E. R. TISCHER.

COTTON GIN. APPLICATION riuzn MAR. 16. 1920.

Patenfied May 30, 1922 I INVENTOR W 1" BY ra ATTORNFVS UNiTTfi STATESearner orrics.

EDW'ARD R. TISCHER, OE HOUSTON, TEXAS, ASSIGNQR 0L1 FORTE PER CENT TOGUS EMIVIER'I', OF'I-IARRIS COUNTY, TEXAS.

corron m Specification of Letters Patent. Pafigntgd lway 30, 1922,

Application filed March 16, 1920. Serial No. 366,251.

lint cotton may be stripped from the seed.

and the lint and seed separated from each other.

Another object of the invention is to provide a device of the characterdescribed whereby the lint cotton, after it is separated from the seed,will be freed of all mats, or compact masses, and will be reduced to aloose and fiuffy state.

A further feature of the invention is to provide the combination with a'ginning roller, of a stripper roller and a stripping,

shoe which cooperate to strip the lint from the seed, said stripperroller and shoe being so arranged that they may be readily withdrawnfrom the ginning roller for repairs or inspection.

A further feature resides in the combination with a spiked roller of abrush by the co-operation of which the lint cotton after being freed ofthe seed will be separated into a uniform loose and flufiy mass.

A still further feature consists of conveyors, operated in a novelmanner for conveying away dirt or other waste materials.

With the above and other objects in view the invention has particularrelation to certain novel features of construction, operation andarrangement of parts, an example of which is given in thi specificationand illustrated in the accompanying drawings, wherein:

Figure 1 shows a front view with certain parts removed for the sake ofclearness, Figure 2 shows a vertical sectional view. Figure 3 shows thegearing employed, Figure 4L shows an enlarged edge view of the strippershoe, and I Figure 5 shows an enlarged fragmentary view of the conveyordriving mechanism.

' Referring now more particularly to the drawings, wherein like numeralsof reference designate similar parts in each of the figures, the numeral1 designates the end members, or legs o fthe casing which are supportedon any suitable base as 2. Rotatably V mounted in suitable bearings inthe upper part of these end members is the transverse shaft 3, and fixedupon this shaft, within the casing, is the ginning roller 4. This roller4 is partially surrounded on the rear by the arcuate hood 5which formsthe upper part of the back of the casing and this hood has alongtransverse slit 5 therein for the intake of air. In front of the ginningroller, and slightly above it there is the stripper roller which isfixed upon the transverse shaft 6 and surrounded by the arcuate hood 7.The shaft 6 is rotatably mounted in suitable bearings carried by theends 8, 8 of the hood 7. The stripper roller is formed of end spiders 9to which the ends of the stripper bars 10 are secured. These bars arespaced apart and have radiating holes or bearings through which thestripper fingers 11 loosely fit. The inner ends of these fingers areformed with heads which prevent them from being thrown outwardlybycentrifugal force and these heads may contact against the shaft 6,

' when this roller is at rest, to prevent them of while the gin is atwork. The lower edge of the hood 7 is fastened to the inner edge of theforwardlydeclining transverse blade bar l3,'which is arranged 'in frontof the gin. The outer edge of this blade bar has bearings on atransverse rod 14, which is fixed in suitable bearings carried by theend members 1, 1 and hand lever 15 is secured to this blade bar. Atransverse stripper blade 16 is fastened at its lower edge to the inneredge of the blade bar and the free edge of this blade isarrangedtangentially with respect to the front side of the ginning roller, asshown in Figure 2. This blade is preferably formed of a plate of bronzebacked by a steel plate which is riveted thereto so that when theginning roller and the blade become heated by friction with the cotton,the bronze plate will expand more than its steel backing and operate tocarry the free edge of the blade, and the stripper shoe 17, carried bysaid edge, away from the ginning roller to compensate for the expansionof said ginning roller and maintain their relative adjustment. Thestripper shoe 17 is also composed of bronze and is formed of sections asshown in Figure 4. Each section is formed of a plate doubled togetherthus forming a two ply shoe and the upper side of each section has theoutwardly turned keepers 18, 18 which engage over the free edge oftheblade 16 to hold the shoe in frictional relation with the front side ofthe ginning .roller. In order :to, gain access to the stripper rollerand stripping shoe 1?, for inspection, or repairs, or for other purposes, the lever 15 may be pulled forwardly which will operate towithdraw said members, together with the blade bar andblade,

from the ginning roller, as illustrated in dotted lines in Figure 2.Upstanding from the base 2 and spaced apart are the bearings 19, 19wherein the shaft 20lis rotatablymounted.

Each end of this shaft has an arm 21 fixed thereon and the shaft alsohas a .footlever 22 fixed thereto. Hooks 23, :23 are pivoted at theirlower ends to the free ends of the respective arms 21, 21 and theirupper ends are formed to engage over thedepending catches 24, 24 carriedby the underside of the blade bar 13. Adjacent the foot pedal there isthe standard 25 which is secured to, and stands up from the base 2- andthe upper end of this standard is overturned'and has the adjusting bolt26 threaded.therethrough. The lower end of this bolt is connected to abearing block 27, which is vertically adjustable on said standard andthrough this bolt the block may be adjusted up and down. When the pedal22 is engaged under the block 27 said pedal is locked against upwardmovement and operates, through the hooks 23, to lock the blade bar 13,.and its appendants, above described in position forginning.

By a lateral movement the pedal may be.re-

leased and then moved upwardly to release the hooks from the catches 24.When said hooks are moved upwardly theinclined shoulders 23 thereofmovingagainst't-h'e re"- lease blocks. 28 operatev to disengage the.hooks from their respective catches thus unlocking the blade bar andpermitting the manipulation of the hand lever- 1.5 for :the

purpose aboveexplained.

Underneaththe ginning roller there is a drum-like fan 29, which-is.fixed uponthe.

transverse shaft 30, rotatable in suitable hearings in the endmembersl, 1. This fan is partially surrounded in. front hymeans of anarcuately formed'casing, front 31, which is preferably formed of sheetmetal, andcontinues upwardly, surrounding the lower part of theginningroller in front. .Therupper edge of'this casing front isspaeedmfrom the inner edge of-the'blade bar to rovide-Ian, air inlet32.. Abovesthis vfan, .arran ed to cooperate therewith there is the spied roller 33, consisting of a drum and projecting spikes which radiatetherefrom. This roller is mounted on the shaft 34 which rotates insuitable bearings carried by the end members 1, 1. A long chamber, forthe reception of dirt and the like, is located behind the roller 33 andis formed with the top and bottom boards 35 and 36, which are spacedapart, and the hinged door 37, forming a closure for said chamber andpermitting access thereto.

WVithin the chamber thus formed there is an arcuately formed screen 38formed of foraminated material and surrounding the drum 33 behind, saidscreen forming, in effeet, a continuation of the hood 5, which, to-.

gether form the back of the gin casing. A

long brush 39 is fastened to the under side of through the" upper partof the screen 38 and cooperate with the spiked roller 33 as hereinafterexplained. Fixed upon one end of the shaft 3 there is a drive pulley 40,and a spurgear 41 inside the pulley. A. drive belt (not shown) operatesover this pulley and rotates the shaft, and ginning roller thereon, inthe direction indicated by the arrow 'in Fi ure 2. Fixed on one end ofthe shaft 6 an normally in mesh with the spur gear 41 there is thesmaller spur gear 42, through which rotation is imparted from the gear41 to the stripper roller. An idler gear 43 is loosely mounted on oneend of the rod 14'and is in mesh with the gear 6 and this gear 43carries the pulley 44 through which the feeder (not shown) is driven.

The other end of the shaft 3 carries a fixed pulley 45 in alignment witha smaller pulley 46 which is fixed on the end of shaft 3 and a belt 47operates over these pulleys and transmits rotation from the former tothe latter and thus driving the fan 29. The inner end of the pulley 45is extended and formed into a grooved pulley 48, aligned with acorresponding grooved pulley 49 fixed on the shaft 34, and operatingover these last named pulleys there is the cross,

belt 50 which transmits rotationf-rom the roller In front and rear ofthe gin there are the respective belt conveyors 51 and 52 which aredriven by the rollers 53 and 54, respectively, whicharefixed onthe frontand rear ends, respectively, of the shaft 55. Loosely mounted on theforward end of the shaft 55 there is an elongated hood 56 and pivoted tothis hood there is a ratchet-lever 57 whose inner end is formed withratchet teeth 58 provided to engage and release the shaft 55, ashereinafter explained. The correspondingyend of' the shaft 34 has an arm59 fixed thereon and alink 60.is pivoted at its respectilve ends tothefree ends of said arm and ratchet lever. As the shaft 34' rotatesit'operates through the arm 59 and the link 60 to oscillate the lever 57and to alternatively engage the teeth 58 with, and release them from,the shaft 55 and to thereby impart successive partial rotations to saidshaft, and, through it, to move said conveyors intermittently. Theseconveyors carry away the seed dirt and other refuse discharged from thestripper roller, and the feeder.

The cotton to be'ginned is delivered by the feederinto the hopper 12 andthe ginning roller carries said cotton into contact with the strippershoe 1?. This shoe arrests the seed but the lint cotton is carried on,by friction of the ginning roller 4, between said roller and shoe. Asbefore stated, this shoe sets on the upper edge of the blade 16 and hasmore or less freedom to rock back and forth thereon so as not to bindtoo closely against the ginning roller and thus to permit the lint topass but to arrest the seed. The stripper fingers beat against the seedcotton, held by said shoe, and loosen up the fiber and remove the seedand dirt therefrom which are discharged through the openings 61 cutthrough the front side of the hood 7 and fall on to the belt 51. Therota tion of the fan 29 creates a suction through the air inlets 5 and32 and the lint cotton is carried by the air current on down through thecasing into contact with the spiked roller 33. The spikes 62 of thisroller, project out far enough to prevent any of the lint from passingdown in front of said roller, and they engage with said lint and sweepthe same around the screen 38 and into contact with the long brush 39which operates to further separate and loosen the fiber and anyremaining dirt and refuse therein is released and blown through saidscreen and falls into the chamber 63 from which it may be removedthrough the door 37. The lint cotton is then caught up by the fan 29 andcarried around in front of it and discharged through the outlet 64:.When the stripping roller and blade are withdrawn, as shown in dottedlines in Figure 2, the spur gear 12 will ride around the gear 43 intothe position shown in dotted lines in Figure 3, and will thus be carriedout of mesh with the spur gear 41. The stripping roller will thus bestopped for the inspection and repair of it or the stripper shoe, andthe feeder will also be stopped to prevent the delivery of cotton to thegin.

What I claim is 1. A cotton gin including a casing, a ginning rollerrotatably mounted therein, a stripping roller arranged to cooperate withthe ginning roller, loosely mounted fingers carried by the strippingroller, a shoe arranged in tangential relation tothe ginning roller andprovided to arrest seed cotton carried into contact with it by theginning roller to permit the fingers of the stripping roller to operateagainst said cotton to strip the seed from the lint thereof.

2. A cotton gin including a casing, a ginning roller rotatably mountedtherein, a shoe arranged in tangential relation to the ginning rollerand provided to arrest the seer cotton carried into cont-act with it, bysaidroller, a stripping roller rotatably mounted in the casing andprovided with loosely mounted fingers which beat against said cottonheld by said shoe to remove the seed therefrom said ginning rollermeanwhile operating to carry, the feed lint, by friction between saidginning roller and shoe.

3. A cotton gin including a. casing, a ginning roller rotatably mountedtherein, a stripping roller arranged to cooperate with the ginningroller, a stripper blade arranged in tangential relation to the ginningroller, a removable shoe mounted on the blade and provided to arrestseed cotton carried into contact with it by the ginning roller, to permit the stripping roller to operate against said cotton to strip theseed from the lint thereof, and means for withdrawing said strippingroller and shoe out of operative relation with the ginning roller.

4. A cotton gin including casing, a ginning roller rotatably mountedtherein, the front part of the casing being formed into a surroundinghood which is hinged with respect to the gin, a stripping rollerrotatably mounted in said hood, a stripper blade secured to the hood andarranged tangentially with respect to the ginning roller and locatedbetween said rollers a shoe fitted over the free edge of the blade meansfor holding said stripping roller and shoe out of, or in operativerelation with the ginning roller, and means for locking them in the lastmentioned relation.

5. A cotton gin including a casing, a ginning roller rotatably mountedtherein, a means arranged to cooperate with said roller whereby thecotton seed are arrested while the lint is stripped therefrom by saidroller, a suction fan arranged in the casing underneath the roller andprovided to create an air current through the casing whereby the lint isdrawn from said roller, spiked roller rotatably mounted in the casingabove the fan, and rotatable in an opposite direction from the fanrotation, a screen surrounding said spiked roller in the rear and afixed brush arranged tocooperate with said spiked roller.

6. A cotton gin including a casing, a ginning roller rotatably moiuitedtherein, the front part of the casing being formed into a surroundinghood, provided with openings, a stripping roller rotatably mounted insaid hood, a shoe cooperating with the ginning roller and arranged toarrest the seed cotton carried into contact therewith by the ginningroller, fingers carried by the stripping roller Which beat against thecot ton held by said shoe to remove the seed and foreign mattertherefrom which are discharged through said' openings, a belt conveyorarranged to receive said seed and for eign matter so discharged throughsaid openings, and means for intermittently niovi11 said conveyor.

I. In a cotton gin a stripper blade formed of bronze backed by a steelplate Which is riveted thereto.

8. In a cotton gin a stripper blade formed of bronze backed by a steelplate which is riveted thereto and a stripper shoe set on the free edgeof saidblade, I

9. In a cotton gin a ginning roller, a blade arranged in tangentialrelation thereto and,

